Law enforcement sources tell us the rapper was getting a bag scanned Wednesday morning at Tampa International Airport before getting onto a Delta flight when TSA agents discovered a Glock 43 in one of his bags, as well as a fully-loaded magazine lying beside it.

We’re told Plies had no permit for the gun, and was arrested by airport police for carrying a concealed weapon — a felony. We’re told he’s currently in custody at Tampa International … and will be transferred to Hillsborough County Jail.

Reportedly, Plies is claiming he is the owner of the gun, but he grabbed the wrong bag before heading to the airport.